They recommended Signal and Wickr as the secure and private messaging apps to use in a combat zone.
Telegram gained tens of millions of new users in just the first few weeks of 2021.
Use precise geolocation data.
This is important to keep in mind when using Telegram.
I run my own OpenVPN Open source and free server for myself and some friends.
For undelivered RCS messages, you can switch to SMS or MMS provided by your carrier, in which case the corresponding RCS message is deleted from the queue.
You need to dowload an app even on a laptop to use it! The platforms could do a lot more.
Unless you use one of these two modes, your communications within Telegram are not really secure.